package cn.webrx;

public class OutDemo {
    public static void main(String[] args) {
        System.out.println("hello");
        Outter.err.print("hello world");
        Outter.err.print(System.getProperty("java.version"));
        Outter.out.print(System.getProperty("java.home"));
        Outter.out.print(System.getProperty("os.name"));
    }
}
